Finding the Fourth Proportional to 2,613.61, 3,606.81 and 1,434.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.61 : 3,606.81 = 1,434.65 : x
2. Step 2: Convert to fraction form
   2,613.61/3,606.81 = 1,434.65/x
3. Step 3: Cross multiply
   2,613.61x = 3,606.81 × 1,434.65
4. Step 4: Simplify right side
   2,613.61x = 5,174,502.79
5. Step 5: Solve for x
   x = 5,174,502.79/2,613.61
6. Step 6: Final answer
   x = 1,979.83